JP2003104692A - Working vehicle with hanging function and high lift working function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a working vehicle with a hanging function and a high lift working function capable of performing various work while lifting a heavy body to a height. SOLUTION: This working vehicle comprises a movable vehicle body 11; a crane mechanism 16 placed on the upper face of the vehicle body 11 to lift a heavy body; and a high lift working mechanism 17 placed on the upper face of the vehicle body 11 and capable of moving a worker up to the height in the air.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work vehicle having a hanging function and an aerial work function capable of simultaneously carrying out various works while hoisting a heavy object at a high place.

[0002]

2. Description of the Related Art Conventionally, work has been actively performed at a position higher than the ground such as mounting a signboard on the wall surface of a building, cutting the top of a roadside tree, or demolishing a building. In this case, if only the worker moves to a high position, the work can be performed without a foothold by using a platform work vehicle that raises and lowers the platform and the work table. However, when the work of lifting a workpiece at a high position and the work of hanging a heavy object at a high position are simultaneously progressed, it is impossible for the aerial work vehicle alone to deal with the problem.

For example, in the work of mounting a signboard on the wall surface of a building, an operator rides on a bucket of an aerial work vehicle and bolts the signboard to the wall surface of the building while hoisting the signboard with a mobile crane. In such work of installing a signboard, it is necessary to prepare two work vehicles, that is, a crane vehicle and an aerial work vehicle, and a worker must be assigned to each work vehicle. It required the use of multiple personnel.

There are various kinds of work at such a high place, and in the work of cutting the top of the roadside tree that has grown too much, the top of the roadside tree is wound in advance by a crane truck and the bucket of the work vehicle at a high place is wound. The worker on board was cutting the middle of the roadside tree. In this method, the top of the cut street tree does not fall to the ground, but can be gently lowered to the ground by the suspended crane vehicle. Also, in the dismantling work of the building, even in the work to remove the beams and columns at a high position, suspend the columns and beams with a crane car in advance,
After that, a worker mounted in a bucket of an aerial work vehicle was cutting or fusing. With this method, the beams and columns did not fall, and accidents and damages could be prevented. In this way, in various work at high places, like a crane vehicle that suspends heavy objects and workpieces and an aerial work vehicle on which workers board,
You have to prepare multiple work vehicles with different functions,
In addition, a dedicated operator was required for each work vehicle. Thus, work in high places requires useless vehicles and workers.

[0005]

In view of this point, the invention of the present application is provided with a crane for suspending a crane and a function for working at a high place for raising and lowering a worker in one work vehicle, and is used as a loading platform of the work vehicle. It is intended to provide a work vehicle on which a work or a heavy object can be placed. This work vehicle can play three roles: a lifting function, a work function at a high place, and a function of transporting a work piece or a heavy object. Since one work vehicle has a suspending function and an aerial work function, these functions can be operated by one worker. Since a worker can lift both a workpiece and a heavy object by a crane and lift them to a high position by the work function at a high place, the number of workers can be reduced.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a movable vehicle body, a crane mechanism mounted on the upper surface of the vehicle body for hoisting heavy objects, and a crane mechanism mounted on the upper surface of the vehicle body for raising an operator in the air. It is characterized by comprising an aerial work mechanism that can be moved to a high place (Claim 1).

The present invention includes a movable vehicle body, a crane mechanism which is placed on the upper surface of the vehicle body, and lifts a heavy object.
It was placed on the upper surface of this car body and was composed of an aerial work mechanism that can move the worker to a high place in the air, and an operation mechanism that can control the crane mechanism and the aerial work mechanism by one person. It is a feature (claim 2).

The crane mechanism of the present invention is characterized by comprising a telescopic boom assembled by inserting a plurality of booms having different inner and outer diameters in a telescopic manner (claim 3).

The aerial work mechanism of the present invention comprises a telescopic boom assembled by inserting a plurality of booms having different inner and outer diameters in a telescopic shape, and a bucket which is connected to the tip of the telescopic boom and on which an operator rides. (Claim 4).

The aerial work mechanism of the present invention is a scissor type lift in which a plurality of link mechanisms are vertically assembled and a workbench is placed on the upper end of the link mechanisms (claim 5). .

The aerial work mechanism of the present invention is characterized in that it is a doglegged lift having a dogleg shape in which the lower end of the upper boom is rotatably connected to the tip end of the swingable lower boom. There is (claim 6).

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. 1, 2, and 3 show a first embodiment, FIG. 1 is a perspective view showing a state in which a suspending function and a high-place working function of a work vehicle 10 are started, and FIG. 2 is a side view thereof. 3 and 4 are plan views thereof. 2 and 3, the suspension function and the work function at high places are reduced,
It shows a state in which the vehicle is ready to run.

The structure of the work vehicle 10 is a modification based on a truck that is conventionally well known and used for carrying cargo. The lower part has a frame-shaped vehicle body 11 made of steel as a skeleton. Front wheels 12 are pivotally supported on the left and right lower surfaces of the front side of the vehicle body 11, and rear wheels 13 are pivotally supported on the left and right lower surfaces of the rear portion of the vehicle body 11. There is. The front wheel 12 and the rear wheel 13 allow the work vehicle 10 to freely move on the road or the ground. Front part of the vehicle body 11 (Figs. 2 and 3)
On the right side of the figure) and above the front wheels 12, a cabin 14 on which a driver rides is placed, and at the center of the rear part of the vehicle body 11, a box-shaped loading platform 15 with an open top is placed. . The configurations of the vehicle body 11, the front wheels 12, the rear wheels 13, the cabin 14, and the luggage carrier 15 are the same as those of conventionally known trucks.

A crane mechanism 16 as a suspending function is mounted on the upper part of the vehicle body 11 and between the vehicle body 11 and the bed 15. Further, the loading platform 15 is not as long as the loading platform of a conventional truck, but its rear portion is shortened and the vehicle body 11 is exposed. On the exposed upper surface of the rear portion of the vehicle body 11, an aerial work mechanism 17 as a function of working at a height is mounted. The crane mechanism 16 is capable of hoisting heavy objects with hydraulic equipment, and the high-altitude work mechanism 17 is capable of lifting a worker to a high place.

The structure of the crane mechanism 16 will be described. A box-shaped base 21 is laid between the vehicle bodies 11 that are parallel to each other on the left and right. The columns 22 and 23 are connected. An outrigger 24 that expands and contracts in the vertical direction is fixed to the tip of the lateral expansion and contraction girder 22, and an outrigger 25 that expands and contracts in the vertical direction is fixed to the end of the lateral expansion and contraction girder 23. A swivel base 26 incorporating a hydraulically driven swivel motor 38 is mounted on the central upper surface of the base 21, and a mast 27 is fixed to the upper surface of the swivel base 26 so as to be vertical. . A straight former boom 2 on the upper end of the mast 27
8 is swingably connected up and down, and a lifting cylinder 35 is interposed between the lower part of the mast 27 and the base of the former boom 28. The former boom 28 is hollow inside with its tip open, and the intermediate boom 29 is inserted from the tip opening. The intermediate boom 29 is an internal hollow with an open tip,
A tip boom 30 is inserted from the tip opening. The original boom 28, the intermediate boom 29, and the front boom 30 form a telescopic telescopic boom that can extend and contract in the longitudinal direction.

A telescopic cylinder 36 is housed inside the original boom 28, and the telescopic cylinder 36 allows the intermediate boom 29 and the front boom 30 to be respectively retracted from the tip of the original boom 28. Further, a winch motor 37 driven by hydraulic pressure is provided inside the mast 27.
The wire 31 wound around the winch motor 37 extends inside the original boom 28, the intermediate boom 29, and the front boom 30, and the wire 31 is hung from the tip of the front boom 30. A hook 32 is hooked on the lower end of the suspended wire 31.

Next, the structure of the aerial work mechanism 17 will be described. A box-shaped base 41 is laid across the rear portion (right side in FIGS. 2 and 3) of the vehicle body 11 which is parallel to the left and right.
Horizontal expansion and contraction girders 42 and 43, which are expanded and contracted by hydraulic pressure, are connected from the left and right of the base 41. An outrigger 44 that expands and contracts in the vertical direction is fixed to the tip of the lateral expansion and contraction girder 42, and an outrigger 44 that expands and contracts in the vertical direction is fixed to the tip of the lateral expansion and contraction girder 43. A swivel base 46 incorporating a hydraulically driven swivel motor 58 is mounted on the central upper surface of the base 41, and a mast 47 is fixed to the upper surface of the swivel base 46 so as to be vertical. This mast 4
A linear base boom 48 is vertically swingably connected to the upper end of 7, and a lift cylinder 55 is interposed between the lower portion of the mast 47 and the base of the base boom 48. The original boom 48 is hollow inside with an open tip, and an intermediate boom 49 is telescopically inserted from the open tip. The intermediate boom 49 is an internal hollow whose tip is open, and the tip boom 50 is inserted from the tip opening. The original boom 48, the intermediate boom 49, and the front boom 50 constitute a telescopic telescopic boom.

A telescopic cylinder 56 is housed inside the original boom 48, and the telescopic cylinder 56 allows the intermediate boom 49 and the front boom 50 to be retracted from the tip of the original boom 48, respectively. Also, the tip boom 50
A basket-shaped bucket 51 on which a worker is to be boarded is connected to the tip of the, and inside the bucket 51, control boards 52 and 53 for controlling the crane mechanism 16 and the aerial work mechanism 17, respectively. It is fixed. In addition, a linear support 61 is vertically fixed to the center of the upper surface of the loading platform 15, and a boom receiver 62 that opens upward in a U-shape is fixed to the upper end of the support 61. The boom receiver 62 contacts the middle outer circumference of the original boom 48 and supports the original boom 48.

Next, FIG. 4 shows a control mechanism for the crane mechanism 16 and the aerial work mechanism 17 in the first embodiment. As described above, the control panels 52 and 53 are fixed to the bucket 51, the control panel 52 is for operating the crane mechanism 16, and the control panel 53 is for operating the aerial work mechanism 17. It is a thing. Control panel 5
The operation lever 65 is projected on the upper part of the
An operating lever 66 is also projected on the upper surface of 3. Control panel 5
2, the tip of the cable 67 is connected, and the cable 6
The other end of 7 is connected to a crane-side controller 71 provided inside the work vehicle 10. Further, a tip of a cable 68 is connected to the control panel 53, and the other end of the cable 68 is provided inside the work vehicle 10 at the work boom side controller 7.
It is connected to 2. A plurality of electric signals are output from the controller 71, and each of the valves 73, 74, 75, 7 is output.
6 is connected to the control side. The output of the valve 73 is to the elevation cylinder 35, the output of the valve 74 is to the telescopic cylinder 36, the output of the valve 75 is to the winch motor 37,
The outputs of the valves 76 are respectively connected to the turning motor 38. A hydraulic pump 77 driven by an engine (not shown) is provided inside the work vehicle 10, and valves 73, 74, 7 are provided on the discharge side of the hydraulic pump 77, respectively.
5, 76 are connected.

Further, a plurality of electric signals are output from the controller 72, and each is connected to the control side of the valves 81, 82 and 83. The output of the valve 81 is connected to the elevation cylinder 55, the output of the valve 82 is connected to the swing motor 57, and the output of the valve 83 is connected to the swing motor 58. A hydraulic pump 84 driven by an engine (not shown) is provided inside the work vehicle 10.
Valves 81, 82, and 83 are connected to the discharge side of No. 4, respectively.

Next, the operation of this embodiment will be described. Since this work vehicle 10 has the same structure as a conventionally known truck, a pilot can get on the cabin 14 and run. First, by driving an engine (not shown), transmitting the driving force to the rear wheels 13 and operating the front wheels 12, the work vehicle 10 can freely travel on public roads or on the ground. It's just like a truck. In this way, the work vehicle 10 can be operated and moved to the intended work place.

Then, for example, in the work of attaching the signboard to the wall surface of the building, the work vehicle 10 is operated to a position close to the building, and the work vehicle 10 is stopped there.
Then, for work at a high place, it is necessary to prepare to temporarily fix the work vehicle 10 so as not to sway due to vibrations or changes in load. This temporary fixing is performed by the outriggers 24, 25, 44, 45 provided at the four corners of the work vehicle 10.

First, the lateral expansion and contraction girders 22 and 23 are extended so that the outriggers 24 and 25 respectively project further than the side surfaces of the work vehicle 10. Similarly, the lateral expansion and contraction girders 42 and 43 are extended to move the outriggers 44 and 45 to the work vehicle 10 respectively.
Project farther than the sides of. Then, the respective outriggers 24, 25, 44, 45 are lowered to relatively move the work vehicle 10 as a whole to the outriggers 24, 25, 44, 45.
To lift. Outriggers 24, 25, 4
By extending 4, 45, the whole body 11 is lifted,
The front wheels 12 and the rear wheels 13 are lifted, and the vehicle body 11 can be stably fixed.

Next, a worker boarded the bucket 51,
By operating the operation levers 65 and 66 of the control boards 52 and 53, the work of attaching the signboard at a high place is performed. When an operator operates the operation levers 65 and 66, the reaction is transmitted via the cables 67 and 68 to the controllers 71 and 72, respectively.
Is transmitted to the crane mechanism 1 by the controllers 71 and 72.
6 and the aerial work mechanism 17 are operated. Crane mechanism 16
The work mechanism 17 for high places can be operated by a single worker who has boarded the bucket 51.

First, in the crane mechanism 16, when the operating lever 65 is swung back and forth, the signal is transmitted to the controller 71 by the cable 67, and the valves 73, 74, 75, 76 are turned on by the swinging degree of each operating lever 65. The pressure oil discharged from the hydraulic pump 77 is supplied by being opened and closed. When the valve 73 is opened, the elevation cylinder 35 is extended, the entire telescopic boom including the original boom 28 is raised, and is tilted so that the elevation angle is higher than horizontal. When the valve 74 is opened, the telescopic cylinder 36 is extended, the intermediate boom 29 and the front boom 30 extend from the original boom 28, and the tip of the front boom 30 is moved to a higher position. Valve 7
When 5 is opened, the winch motor 37 is driven, the wound wire 31 is unwound, and the wire 31 is pulled out from the tip of the tip boom 30. As a result, the hook 32 suspended on the wire 31 can be lowered from the tip of the tip boom 30 to catch a work piece or a heavy object, and then the winch motor 37 can be reversed to lift it. When the valve 76 is opened, the turning motor 38 is driven, and the entire crane mechanism 16 can be normally or reversely rotated with respect to the base 21, and the position of the tip of the front boom 30 can be rotated left and right. The operation and operation of such a crane mechanism 16 are the same as those of conventionally known cranes.

Next, in operating the aerial work mechanism 17, when the operating lever 66 is swung back and forth, the signal is transmitted to the controller 72 by the cable 68, and the valves 81 and 82 are moved depending on the swinging state of each operating lever 66. , 83 are opened and closed, and the pressure oil discharged from the hydraulic pump 84 is supplied.
When the valve 81 is opened, the depression / elevation cylinder 55 is extended, the entire telescopic boom including the original boom 48 is raised, and is tilted so that the elevation angle is higher than horizontal. When the valve 82 is opened, the telescopic cylinder 56 is extended, the intermediate boom 49 and the front boom 50 extend from the original boom 48, and the tip of the front boom 50 is moved to a higher position. When the valve 83 is opened, the turning motor 57 is driven, and the work mechanism 1 for high places is operated.
The whole 7 can be rotated in the normal direction or the reverse direction with respect to the base 41, and the position of the tip of the front boom 50 can be rotated left and right. By such an operation, the bucket 51 fixed to the tip of the front boom 50 is lifted up to a high position, and the position in the air can be three-dimensionally varied and freely moved. The operation of the working mechanism for high places 17 is the same as that of the boom type working device for high places which is conventionally known.

In this way, the operator boarding the bucket 51 operates the operating lever 66 to operate the bucket 51.
Can be moved freely in the air to approach the wall surface of the building on which the sign is to be attached to secure the work position. Further, by operating the operation lever 65, the position of the tip of the front boom 30 can be freely moved, and the front boom 30 can be moved freely.
The position of the wire 31 hung from the tip of can be changed. Hook 32 suspended on this wire 31
The work piece, in this case a signboard, can be hung up and lifted near the wall of the building. In this way, if the signboard is lifted up to the building wall surface by the crane mechanism 16 and the bucket 51 is brought close to the building wall surface by the aerial work mechanism 17, the worker boarding the bucket 51 screws the bolt into the signboard and the metal fitting on the building wall surface. This allows the signboard to be fixed to the wall of the building. This series of work can be performed by one worker alone on the bucket 51. FIG. 1 shows the state of this work.

When pruning the top of the road tree that has grown too much, the crane mechanism 16 is operated to move the tip of the tip boom 30 to the upper part of the road tree, and the hook 32 is wound around the trunk of the road tree. Hook the wire. In this state, the bucket 51 that has operated the high-altitude work mechanism 17 is brought close to the top of the street tree, and the trunk of the street tree is pruned by the worker who has boarded the bucket 51. Since the top of the cut roadside tree is suspended by the hook 32, it is held as it is without falling to the ground. Then, by operating the crane mechanism 16, the top of the roadside tree can be gently lowered to the ground. Similarly, when dismantling a building, the pillars or beams to be dismantled are hooked 32
It is possible to safely lower the pillars or beams without dropping them on the ground as they are by suspending them and then cutting by a worker who has boarded the bucket 51.

FIG. 5 shows a second embodiment of the present invention. In this embodiment, a crane mechanism 16 mounted on the work vehicle 10 and an aerial work mechanism 17 in FIGS. 1 to 4 are shown. It shows a modification of the storage state of. In the embodiment shown in FIG. 5, the same components as those in the first embodiment have the same reference numerals and the description thereof will be omitted.

In the second embodiment, the crane mechanism 1
6. When the aerial work mechanism 17 is housed and travels on a road or the ground, each telescopic boom can be positioned on the upper surface of the loading platform 15. In the first embodiment shown in FIG. 3, the crane mechanism 16 is directed forward of the cabin 14, and the telescopic booms of the crane mechanism 16 and the aerial work mechanism 17 have their axes aligned. It was stored. In the second embodiment, the crane mechanism 1
6 telescopic boom is placed above the loading platform 15 for storage,
It is designed so that it does not project to the front of the cabin 14. In this case, the original boom 28 of the crane mechanism 16 and the original boom 48 of the high-altitude work mechanism 17 are inclined at an angle with respect to the axis of the vehicle body 11 so that the original booms 28, 48 are parallel to each other. It is stored at intervals. As described above, since the telescopic booms of the crane mechanism 16 and the aerial work mechanism 17 are obliquely arranged so as to be staggered, the crane mechanism 16 and the aerial work mechanism 17 are housed within the range of the loading platform 15, 16 does not project to the front of the work vehicle 10.

FIG. 6 shows a third embodiment of the present invention, and the description of the same configuration as the first embodiment shown in FIGS. 1 to 4 is omitted. . In this embodiment, the crane mechanism 16 and the aerial work mechanism 17 in the first embodiment are attached to the front and rear of the vehicle body 11 in reverse.

A box-shaped base 91 is fixed on the upper surface of the vehicle body 11 between the cabin 14 and the cargo bed 15, and a swivel base 92 is mounted at the center of the upper surface of the base 91. A mast 93 is vertically fixed to the upper surface of the swivel base 92, and a base portion of a former boom 94 is swingably connected to an upper end of the mast 93. From the tip opening of the former boom 94 to the middle boom 9
5 and insert the boom 9 through the tip opening of the intermediate boom 95.
6 is inserted. These former boom 94, middle boom 9
5. The tip boom 96 constitutes a telescopic telescopic boom, and the tip of the tip boom 96 is connected to a bucket 97 on which an operator rides. These masts 9
3, the original boom 94, the intermediate boom 95, the front boom 96, and the bucket 97 constitute an aerial work mechanism 88.

A box-shaped base 101 is fixed to the rear of the vehicle body 11, a swivel base 102 is mounted in the upper center of the base 101, and a mast is mounted on the upper surface of the swivel base 102. 103 is fixed vertically. The original boom 104 is swingably connected to the upper end of the mast 103, and the intermediate boom 105 is connected to the intermediate boom 105 through the tip opening of the original boom 104.
Insert the first boom from the tip opening of the intermediate boom 105.
06 is inserted, the former boom 104, the intermediate boom 10
5, the tip boom 106 constitutes a telescopic telescopic boom. Although not shown in FIG. 6, a wire and a hook are hung from the tip of the front boom 106, and the mast 103, the former boom 104, the intermediate boom 105, the front boom 106, and the like constitute a crane mechanism 89. .

In the third embodiment, the crane mechanism 16 and the aerial work mechanism 17 in the first embodiment are attached to the vehicle body 11 so as to be in opposite positions in the front and rear. When the aerial work mechanism 88 and the crane mechanism 89 are stored in the vehicle body 11, the original boom 94 of the aerial work mechanism 88 and the original boom 104 of the crane mechanism 89 are positioned on the upper surface of the cargo bed 15. And the former boom 94, 10
4 are parallel to each other, and are arranged so as to incline at an angle with respect to the longitudinal direction of the loading platform 15. With such a configuration, similarly to the first embodiment, a workpiece or a heavy object can be lifted up and a worker on the bucket 97 can perform work at a high place. The mechanism 88 and the crane mechanism 89 can be accommodated within the floor area of the cargo bed 15.

Next, FIG. 7 shows a fourth embodiment of the present invention. In this embodiment, the crane mechanism 16 placed in the middle of the vehicle body 11 has the same configuration as that of the first embodiment, but the aerial work mechanism placed on the rear portion of the vehicle body 11 is a scissors type. It is a lift 110.

This scissors type lift 110 has a link 1
11 and 112, links 113 and 114, and links 115 and 116 are rotatably pin-connected at the respective centers to be combined in an X-shape, and each set of links 111, 112, 11
The main part is a link mechanism in which 3, 114, 115, and 116 are vertically connected. The lower ends of the links 111 and 112 are connected to the vehicle body 11, and the links 115 and 116 are
A work table 117 is connected to and mounted on the upper end of the. When the links 111 to 116 are opened at the center connected to the X shape, the link mechanism moves up and down in a pantograph shape, and the work table 117 is moved up and down. In this way, the workbench 117 placed on the upper end of the link mechanism can be raised from the vehicle body 11 to a higher position. Workbench 1
A worker boarded 17 and hooks 32 of the crane mechanism 16
It is possible to perform work such as attaching or detaching a workpiece or heavy object that has been hung up at a high place. In this case, since the workbench 117 has a large area, a plurality of workers can be put on the workbench 117, and a work or a heavy object can be placed on the workbench 117 and moved up and down, which improves the applicability of work in high places. Can be made wider.

Furthermore, FIG. 8 shows a fifth embodiment of the present invention, in which a refraction lift 121 is mounted on the rear portion of the vehicle body 11. The construction of the crane mechanism 16 is the same as that of the first embodiment.

A swivel base 122 is mounted on the upper surface of the rear portion of the vehicle body 11, and a lower end of an elongated lower arm 123 is pin-connected to the upper part of the swivel base 122 so as to be vertically swingable. The lower arm 123 has a lower end to which the lower end of the upper arm 124 is vertically swingably pin-connected, and is arranged so that the lower arm 123 and the upper arm 124 have a V shape when viewed from the side. An elevation cylinder 126 is interposed between the swivel base 122 and the lower arm 123, and an opening / closing cylinder 12 is provided between the lower arm 123 and the upper arm 124.
7 is interposed. A bucket 125 on which an operator rides is connected to the tip of the upper arm 124.
The refraction type lift 121 is configured by these configurations, and the bucket 125 can be three-dimensionally moved to a desired high position by expanding and contracting the elevation cylinder 126 and the opening / closing cylinder 127, respectively.

In this embodiment, a worker mounted on the bucket 125 operates the elevation cylinder 126 and the opening / closing cylinder 127 to move the bucket 125 to a desired high position and lift it by the crane mechanism 16 at that position. It is possible to perform the work of attaching and detaching the workpieces and heavy objects. It is also possible to perform work at high places such as cutting down tree trees and demolishing buildings.

In the embodiment of the present invention, an example in which a truck is used as a movable vehicle and a crane mechanism and an aerial work mechanism are loaded on the body of the truck has been described.
It is not limited to this form. For example, an orbital vehicle that supports tires and iron wheels on the vehicle body and can travel on both railroads and public roads, an off-road vehicle that has crawlers attached to the lower part of the vehicle body, and multiple wide tires that support multiple tires to drive in mud It can also be applied to tire-type rough terrain vehicles.

Further, in the present embodiment, the control panel for operating the crane mechanism and the work mechanism at high places is attached to the bucket, and the hydraulic control mechanism is operated by wire. However, it can be operated by radio. May be Furthermore, since the crane mechanism and aerial work mechanism are operated by one person, each telescopic boom of the crane mechanism and aerial work mechanism must be installed in order to prevent accidents due to close collision between them. A safety device may be provided to automatically stop the operation when approaching.

[0042]

The present invention is constructed as described above,
A single vehicle can have a crane function for lifting and lowering work and heavy objects, and an aerial work function for moving a worker to a high position in the air. For this reason, in the conventional work at a high place, two crane cars and a work vehicle at a high place were required, but the work can be processed by one unit. For this reason, if one vehicle is operated at one high-place work site, the construction can be dealt with, and the vehicle operation cost can be reduced.

Further, a crane function and an aerial work function are installed in one vehicle, and each function can be operated by one person. For this reason, conventionally, it was necessary to arrange a worker and an operator in each of the crane vehicle and the aerial work vehicle, but it is possible to reduce the number of personnel and the labor cost becomes low.

Further, the crane function and the aerial work function can be constituted by telescopic booms each combining a plurality of booms. By using telescopic type telescopic booms that can be obtained at low cost in the city, The production cost can be reduced.

Since a scissors type lift or a refraction type lift can be used for the function of working at height, a mechanism suitable for the work site can be used.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a work vehicle of the present invention and showing a state in which a suspending function and an aerial work function are activated.

FIG. 2 is a side view of the first embodiment of the present invention.

FIG. 3 is a plan view of the first embodiment of the present invention.

FIG. 4 is a circuit diagram showing a control circuit for operating a hydraulic device according to the first embodiment of the present invention.

FIG. 5 is a plan view showing a second embodiment of the work vehicle of the present invention.

FIG. 6 is a plan view showing a third embodiment of the work vehicle of the present invention.

FIG. 7 is a perspective view showing a fourth embodiment of a work vehicle of the present invention.

FIG. 8 is a perspective view showing a fifth embodiment of a work vehicle of the present invention. 10 Work Vehicle 11 Vehicle Body 15 Loading Platform 16 Crane Mechanism as a Suspending Function 17 Aerial Work Mechanism as an Aerial Work Function 51 Bucket 110 Scissor Lift 121 Refractive Lift

Claims (6)

[Claims] 1. A movable vehicle body, a crane mechanism which is placed on the upper surface of the vehicle body and lifts a heavy object, and a crane mechanism which is placed on the upper surface of the vehicle body and can move an operator to a high place in the air. A work vehicle having a suspending function and an aerial work function, which is composed of an aerial work mechanism. 2. A movable vehicle body, a crane mechanism mounted on the upper surface of the vehicle body for lifting heavy objects, and a crane mechanism mounted on the upper surface of the vehicle body, which enables an operator to move to a high place in the air. A work vehicle having a suspending function and an aerial work function, which is composed of an aerial work mechanism and a crane mechanism and an operating mechanism capable of operating the aerial work mechanism by one person. 3. The suspending function and the working function at a high place according to claim 1, wherein the crane mechanism comprises a telescopic boom assembled by inserting a plurality of booms having different inside and outside diameters in a telescopic shape. Work vehicle with. 4. The aerial work mechanism comprises a telescopic boom assembled by inserting a plurality of booms having different inner and outer diameters in a telescopic shape, and a bucket which is connected to the tip of the telescopic boom and on which an operator rides. A work vehicle having the suspending function and the work function at high places according to claim 1 or 2. 5. The suspension according to claim 1, wherein the aerial work mechanism is a scissor type lift in which a plurality of link mechanisms are vertically assembled and a workbench is placed on the upper end of the link mechanisms. A work vehicle with a lowering function and a function for working at heights. 6. The aerial work mechanism is a refracting lift having a dogleg shape in which a lower end of an upper boom is rotatably connected to a tip of a lower boom that can be swung. A work vehicle having the suspending function described in 1 and 2 and the function for working in high places.